Circulating evaporation concentration system

Abstract

The utility model relates to the technical field of pharmaceutical and food evaporation equipment, in particular to a circulating evaporation concentration system, which comprises an evaporation barrel connected with an exhaust pipe. A first circulating pipe is connected between the concentrated solution tank and the evaporation barrel; the input end of the negative pressure pump is connected with the concentrated solution tank, and the output end of the negative pressure pump is connected with the evaporation barrel. According to the circulating evaporation and concentration system disclosed by the utility model, materials automatically circulate in the evaporation barrel and the concentrated solution tank through the matching of the negative pressure pump and the first circulating pipe, so that automatic circulating evaporation is realized, a concentrated solution with an extremely high concentration ratio is obtained, the whole evaporation and concentration process can be automatic, and meanwhile, the concentration ratio of the obtained concentrated solution is high.

Description

Technical Field

[0001] The utility model relates to the technical field of pharmaceutical and food evaporation equipment, in particular to a circulating evaporation and concentration system. Background Art

[0002] High-efficiency rotary thin film evaporator is a new type of high-efficiency evaporator that can perform falling film evaporation under certain vacuum conditions by forming an "air knife" through the high-speed rotation of a fixed rotating scraper. It has a large heat transfer coefficient, high evaporation intensity, short and adjustable flow time, and is particularly suitable for evaporation and concentration of heat-sensitive materials and high-viscosity materials, as well as solvent removal.

[0003] The existing evaporation and concentration method uses a single-feed method, where a peristaltic pump delivers material into the evaporation cylinder at a constant feed rate. Within the evaporation cylinder, under the combined effects of vacuum and low temperature, components with lower boiling points are vaporized into a gaseous state, while components with higher boiling points remain liquid. After evaporation and concentration, the evaporated gas is collected by a subsequent waste liquid collection device, while the unvaporized liquid flows along the inner wall of the evaporation cylinder back into the concentrate collection tank, completing the separation process of evaporation and concentration.

[0004] However, the concentration of the concentrated liquid obtained in this way is relatively low, and it needs to be repeated many times to reach the required concentration ratio. Utility Model Content

[0005] The technical problem to be solved by the utility model is: in order to solve the technical problems in the prior art, the utility model provides a circulating evaporation and concentration system.

[0006] The technical solution adopted by the utility model to solve its technical problems is: a circulating evaporation concentration system, including an evaporation cylinder, which is connected to an exhaust pipe; a concentrated liquid tank, a first circulation pipe is connected between the concentrated liquid tank and the evaporation cylinder; and a negative pressure pump, the input end of the negative pressure pump is connected to the concentrated liquid tank, and the output end of the negative pressure pump is connected to the evaporation cylinder.

[0007] The utility model provides a circulating evaporation and concentration system. Through the cooperation of a negative pressure pump and a first circulation pipe, materials automatically circulate in an evaporation cylinder and a concentrated liquid tank, thereby realizing automatic circulating evaporation to obtain a concentrated liquid with an extremely high concentration ratio. The entire evaporation and concentration process can be automated, and the concentrated liquid obtained has a relatively high concentration ratio.

[0008] Furthermore, the concentrate tank is connected to a material tank, and a first control valve is provided between the material tank and the concentrate tank.

[0009] Through the above technical solution, the material tank is convenient for supplying materials to the concentrated liquid tank, and the first control valve is convenient for disconnecting the material tank from the concentrated liquid tank after the material supply is completed, so as to avoid affecting the material tank during the evaporation and concentration process.

[0010] Furthermore, a second control valve is connected to the bottom of the concentrate tank, the output end of the second control valve is connected to the input end of the negative pressure pump, the output end of the second control valve is also connected to a third control valve, and the output end of the third control valve is connected to a collection tank.

[0011] Through the above technical solution, after the evaporation and concentration are completed, the second control valve and the third control valve are both opened to guide the concentrated post-concentrate into the collection tank.

[0012] Furthermore, a visible strip mirror is provided on the side wall of the concentrate tank, and a volume scale mark is provided on the visible strip mirror.

[0013] With the above technical solution, the volume of the concentrated liquid in the concentrated liquid tank can be easily observed in real time through the visual strip mirror.

[0014] Furthermore, a rotating member is connected to the bottom of the concentrated liquid tank, and an output end of the rotating member extends into the concentrated liquid tank and is connected to a paddle.

[0015] Through the above technical solution, the paddles are used for stirring and mixing, so that the materials in the tank are mixed evenly without any adverse phenomena such as stratification and staggered layers.

[0016] Furthermore, a first cleaning pipe is provided on the exhaust pipe, a fourth control valve is installed on the first cleaning pipe, one end of the first cleaning pipe away from the fourth control valve extends into the concentrate tank and is connected to a first cleaning ball, the other end of the first cleaning pipe extends into the exhaust pipe and is connected to a second cleaning ball, and the first cleaning pipe is also connected to a cleaning inlet pipe.

[0017] With the above technical solution, the cleaning liquid is introduced into the first cleaning pipe through the cleaning inlet pipe, and then the concentrate tank and the inside of the exhaust pipe are cleaned respectively by the first cleaning ball and the second cleaning ball.

[0018] Furthermore, the evaporating cylinder is connected to a second cleaning pipe, the second cleaning pipe is connected to a fifth control valve, one end of the second cleaning pipe is connected to the first cleaning pipe, and the other end extends into the evaporating cylinder and is connected to a third cleaning ball.

[0019] Through the above technical solution, the evaporation cylinder can be cleaned by the third cleaning ball.

[0020] Furthermore, a sixth control valve is connected to the first cleaning pipe.

[0021] Through the above technical solution, the cleaning of the concentrate tank can be easily controlled through the cooperation of the sixth control valve and the second cleaning pipe.

[0022] Furthermore, a heat-insulating layer is provided on the side wall of the concentrate tank.

[0023] The above technical solution facilitates heat preservation of the concentrated liquid tank.

[0024] Furthermore, the concentrate tank is provided with a pressure gauge.

[0025] The above technical solution facilitates real-time monitoring of the pressure in the concentrate tank.

[0026] The beneficial effects of the present utility model are:

[0027] 1. Through the cooperation of the negative pressure pump and the first circulation pipe, the material automatically circulates in the evaporation cylinder and the concentrated liquid tank, thereby realizing automatic circulation evaporation to obtain a concentrated liquid with a very high concentration ratio. The entire evaporation and concentration process can be automated, and the concentrated liquid obtained has a high concentration ratio.

[0028] 2. Through the visual strip mirror, it is easy to observe the volume of the concentrate in the concentrate tank in real time;

[0029] 3. The paddles are used to stir and mix the materials in the tank so that they are evenly mixed without any stratification or staggered layers. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0031] Figure 1 It is a schematic structural diagram of an overall circulating evaporation and concentration system in the present utility model.

[0032] In the figure: 1. Evaporation cylinder; 11. Exhaust pipe; 12. Fourth control valve; 13. First cleaning pipe; 131. Cleaning inlet pipe; 132. First cleaning ball; 133. Second cleaning ball; 14. Fifth control valve; 15. Second cleaning pipe; 151. Third cleaning ball; 16. First circulation pipe; 17. Sixth control valve; 18. Insulation layer; 2. Concentrate tank; 21. Material tank; 22. First control valve; 23. Second control valve; 24. Third control valve; 25. Collection tank; 26. Visual strip mirror; 27. Rotating part; 271. Paddle; 28. Pressure gauge; 3. Negative pressure pump. DETAILED DESCRIPTION

[0033] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0035] The utility model discloses a circulating evaporation and concentration system.

[0036] Reference Figure 1 A circulating evaporation and concentration system includes an evaporation cylinder 1, a concentrated liquid tank 2, and a negative pressure pump 3. An exhaust pipe 11 is connected to the evaporation cylinder 1. A first circulation pipe 16 is connected between the concentrated liquid tank 2 and the evaporation cylinder 1. The input end of the negative pressure pump 3 is connected to the concentrated liquid tank 2, and the output end of the negative pressure pump 3 is connected to the evaporation cylinder 1. Through the cooperation of the negative pressure pump 3 and the first circulation pipe 16, the material automatically circulates within the evaporation cylinder 1 and the concentrated liquid tank 2, thereby achieving automatic circulating evaporation to obtain a concentrated liquid with an extremely high concentration ratio. The entire evaporation and concentration process can be automated, and the concentrated liquid obtained has a high concentration ratio.

[0037] Specifically, the concentrate tank 2 is connected to the material tank 21, and a first control valve 22 is provided between the material tank 21 and the concentrate tank 2. The material tank 21 facilitates the supply of material to the concentrate tank 2, and the first control valve 22 facilitates disconnecting the material tank 21 from the concentrate tank 2 after the material supply is completed, so as to prevent the material tank 21 from being affected by the evaporation and concentration process.

[0038] A second control valve 23 is connected to the bottom of the concentrate tank 2. The output of the second control valve 23 is connected to the input of the negative pressure pump 3. The output of the second control valve 23 is also connected to a third control valve 24, and the output of the third control valve 24 is connected to a collection tank 25. After evaporation and concentration are completed, both the second and third control valves 23 and 24 are opened to direct the concentrated post-concentrate into the collection tank 25.

[0039] A visual strip mirror 26 is provided on the side wall of the concentrated liquid tank 2, and a volume scale mark is provided on the visual strip mirror 26. Through the visual strip mirror 26, the concentrated liquid volume in the concentrated liquid tank 2 can be observed in real time.

[0040] A rotating member 27 is connected to the bottom of the concentrate tank 2. The output end of the rotating member 27 extends into the concentrate tank 2 and is connected to a paddle 271. The paddle 271 stirs and mixes the materials in the tank, ensuring a uniform mixture without stratification or staggered layers. Rotating member 27 can be a motor.

[0041] More specifically, a pressure gauge 28 is provided on the concentrate tank 2 to facilitate real-time monitoring of the pressure in the concentrate tank 2 .

[0042] The exhaust pipe 11 is connected to a first cleaning pipe 13, which is equipped with a fourth control valve 12. A cleaning inlet pipe 131 is also connected to the first cleaning pipe 13 to facilitate the entry of cleaning liquid. The end of the first cleaning pipe 13, away from the fourth control valve 12, extends into the concentrate tank 2 and is connected to a first cleaning ball 132. The other end extends into the exhaust pipe 11 and is connected to a second cleaning ball 133. A sixth control valve 17 is connected to the first cleaning pipe 13 to facilitate the entry of cleaning liquid into the first cleaning ball 132. A second cleaning pipe 15 is connected to the evaporator cylinder 1, which is equipped with a fifth control valve 14. One end of the second cleaning pipe 15 is connected to the first cleaning pipe 13, and the other end extends into the evaporator cylinder 1 and is connected to a third cleaning ball 151. During operation, cleaning liquid is introduced into the first cleaning pipe 13 through the cleaning inlet pipe 131, and then the first cleaning ball 132, the second cleaning ball 133 and the third cleaning ball 151 clean the concentrate tank 2, the exhaust pipe 11 and the evaporation cylinder 1 respectively.

[0043] In addition, a heat-insulating layer 18 is provided on the side wall of the concentrate tank 2 to facilitate heat preservation of the concentrate tank 2 .

[0044] Working Principle: Material is supplied to concentrate tank 2 via material tank 21. First control valve 22 facilitates disconnection between material tank 21 and concentrate tank 2 after material supply is complete, preventing any impact on material tank 21 during the evaporation and concentration process. Subsequently, through the cooperation of negative pressure pump 3 and first circulation pipe 16, the material automatically circulates within evaporation cylinder 1 and concentrate tank 2, achieving automatic evaporation and recycling to produce a concentrate with an extremely high concentration ratio. The entire evaporation and concentration process is automated, and the resulting concentrate has a high concentration ratio. After evaporation and concentration are complete, both second and third control valves 23 and 24 are opened to direct the concentrated post-concentrate into collection tank 25.

[0045] Based on the above-mentioned ideal embodiment of the present invention, and in accordance with the above description, relevant personnel can make various changes and modifications without departing from the technical scope of the present invention. The technical scope of the present invention is not limited to the content of the specification, but must be determined according to the scope of the claims.

Claims

1. A circulating evaporation concentration system, characterized in that: include An evaporation cylinder (1), wherein an exhaust pipe (11) is connected to the evaporation cylinder (1); A concentrated liquid tank (2), wherein a first circulation pipe (16) is connected between the concentrated liquid tank (2) and the evaporation cylinder (1), a material tank (21) is connected to the concentrated liquid tank (2), and a first control valve (22) is provided between the material tank (21) and the concentrated liquid tank (2); a second control valve (23) is connected to the bottom of the concentrated liquid tank (2), an output end of the second control valve (23) is connected to the input end of the negative pressure pump (3), the output end of the second control valve (23) is further connected to a third control valve (24), and the output end of the third control valve (24) is connected to a collection tank (25); a visual strip mirror (26) is provided on the side wall of the concentrated liquid tank (2), and a volume scale mark is provided on the visual strip mirror (26); A negative pressure pump (3), wherein the input end of the negative pressure pump (3) is connected to the concentrated liquid tank (2), and the output end of the negative pressure pump (3) is connected to the evaporation cylinder (1).

2. A circulating evaporation concentration system according to claim 1, characterized in that: The bottom of the concentrated liquid tank (2) is connected to a rotating member (27), and the output end of the rotating member (27) extends into the concentrated liquid tank (2) and is connected to a paddle (271).

3. A circulating evaporation concentration system according to claim 1, characterized in that: The exhaust pipe (11) is provided with a first cleaning pipe (13), a fourth control valve (12) is installed on the first cleaning pipe (13), one end of the first cleaning pipe (13) away from the fourth control valve (12) extends into the concentrate tank (2) and is connected to a first cleaning ball (132), the other end of the first cleaning pipe (13) extends into the exhaust pipe (11) and is connected to a second cleaning ball (133), and the first cleaning pipe (13) is also connected to a cleaning inlet pipe (131).

4. A circulating evaporation concentration system as claimed in claim 3, characterized in that: The evaporation cylinder (1) is connected to a second cleaning pipe (15), the second cleaning pipe (15) is connected to a fifth control valve (14), one end of the second cleaning pipe (15) is connected to the first cleaning pipe (13), and the other end extends into the evaporation cylinder (1) and is connected to a third cleaning ball (151).

5. A circulating evaporation concentration system as claimed in claim 3, characterized in that: The first cleaning pipe (13) is connected to a sixth control valve (17).

6. A circulating evaporation concentration system according to claim 1, characterized in that: A heat-insulating layer (18) is provided on the side wall of the concentrated liquid tank (2).

7. A circulating evaporation concentration system according to claim 1, characterized in that: The concentrated liquid tank (2) is provided with a pressure gauge (28).

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